ANA - titre
Serum is required.
EDTA and Lithium heparin plasma has not been validated by the slide manufacturer.
A comment to this effect will accompany the results if plasma has been tested.
Ambient (8 - 24 degrees Celsius)
100 uL serum - minimum, 1 mL serum - preferred. Store in fridge
Systemic autoimmune disease is usually associated with titres greater than 1/80
Indirect Immunofluorescence on Hep2000 cells. Titred from 1 in 160.
$35.61 (Exclusive of GST)
Anti-nuclear Antibodies - titre
Negative ANA usually rules out (99% sensitive using the 1982 ACR Classification Criteria) a diagnosis of SLE although anti Ro positive SLE patients may be negative. See comments on result reports regarding ANA patterns.
Positive ANA screens are always titred.
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